Roll-change device



Au'g- 1929- D. .1. SCOTT 1,724,225

ROLL CHANGE DEVICE Original Filed March 25, 1926 2 Sheets-Sheet 1 K Wu" @zqAit/ENTOR WQM ATTORNEY Aug. 13, 1929. J SCOTT 1,724,225

ROLL CHANGE DEVICE Original Filed March 25, 1926 2 Sheets-Sheet 2 N l H" a INVENTOR MW ATTORNEY Patented Aug. 13, 1929.

UNITED STATES 1,724,225 PATENT OFFICE.

DAVID J. scoTT, F PLAINFIELD, NEW JERSEY, ASSIGINOR To ISABELLA ScoTT AND DAVID J. SooTT, ExEoUToEs 01? THE EsTATE or WALTER scoTT, DEoEASED, Do- ING BUSINESS As WALTER scoTT & COMPANY, OF PLAINFIELD, NEW JERSEY.

ROLL-CHANGE DEVICE.

Application filed March 25, 1926, Serial No. 97,169. Renewed November 7, 1928.

the rolls successively into action, the leading end of the replenishing roll being pasted and the movement of the support bringing the pasted roll into contact with the employed web. This construction has several disadvantages, the chief one being the necessity of moving the heavy support or roll stand during the pasting action and also that if thepaste does not happen to be in the right place on the roll the pasted portion may move by the employed web and consequently no joining of the webs takes place.

These disadvantages are obviated in the present invention in that,instead of pasting a roll to aweb, guiding means are provided for independently guiding the two webs in the same general direction and adjacent to each other so that the two webs may be attached together whether the support is moving or standing still, and, when moved, the support is rotated in the same general direction as that of the feeding movement of the webs unwinding from the rolls.

In the accompanying drawings the invention is disclosed in a concrete and preferred form in which:

Fig. 1 is a general view, somewhat diagrammatic, in end elevation, of a machine embodying the invention.

Fig. 2 is a detail View, in end elevation, of the pasting means.

Fig. 3 is a side elevation of the parts shown in Fig. 2.

4 is a detail View showing a modification.

1 indicates a web-pulling machine such as a printing machine and 2 is a rotatable support mounted on shaft 3 and adapted to hold a plurality of rotatable web rolls, in the present instance three, designated by 4. 5 and 6. Roll 4 is the employed roll and 5 and 6 are replenishing rolls. Employed web 7 from roll 1 passes over guides 8 and 9 and thence through the rollers of an automatic tension device 10 of the character disclosed 111 application Ser. N 0. 741,098, filed October 2, 1924, after which it enters the web-pulling machine. 11 indicates a backing member of a flexible character here consisting of a belt 12 passing over pulleys 13 and 14. Pulley 14 is mounted in a sliding bearing 15 and Spring 16 normally urges said bearing downward in Fig. 2, but when pressure is applied to the belt during the pasting action the sliding bearing will move u to compensate for the flexing of one of the normally straight runs of the belt. As shown, this backing member is located intermediate guides 8 and 9.

17 indicates a web-attaching member or pasting roller located. adjacent the backing member but with the employed web intervening, and this roller, as here shown, is mounted on a crank arm 18 on shaft 19. 20 is a handle for actuating the crank arm. 21 indicates a replenishing web coming from roll 5 and threaded over said roller 17 so that it lies adjacent to the employed web..

22 is a pasting shelf on which the end of the replenishing web is placed and where it .may be held in position by grippers or spring fingers 23. l/Vhen the end of web 21 is on the shelf 22 paste may be applied to it.

It will be notedthat the arrangement of the parts is such that the replenishing web may be threaded over the pasting roller while web 7 is feeding. \Vhen roll 4 is about to become exhausted, web 21 having been threaded into position and pasted as previously described crank arm 18 is swung upward to the right in Fig. 1 thereby drawing the end of the replenishing web from under grippers 23 and bringing said replenishing web against the employed web and the'latter against the backing member whereby the two webs are pasted together. The paste roller gives a wiping contact in the same general direction as the feeding movement of web 7, and belt 12 is flXed by the impact thereof in the manner described. \Veb 7 may be either standing still or running slowly while this action takes place and support 2 may likewise be either standing still or moving. Be that as it may, it will be soon that the turning movement of the support is likewise in the same general direction as that of the feeding movement of the webs as they unwind from the rolls, this movement being indicated by arrow The support may be turned by hand or by means of a suitable motor acting through worm 25 and gear 26. So likewise crank arm 18 may be movedby hand or by means of a motor. After the oint has been made I the old web is severed by hand or automatically in a manner well understood.

In Fig. 4 is shown a modified form of the invention. Here the pasting shelf 2-2 is omitted and pasting roller 27 is in the form jacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member -with the web from the employed roll inter-- vening whereby the webs from the employed and replenishing rolls may be attached together.

2. A roll change device including: a rotatable support for a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member with the web from the employed roll intervening whereby the webs from the employed and replenishing rolls may be attached together, and means for turning the support in the same general direction as that of the feeding movement of the employed web adjacent the backing member.

3. A roll change device including: a rotatable support for a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member with the web from the employed roll intervening whereby the webs from the employed and replenishing rolls may be attached together, and means to move the replenishing web against the employed web and the latter against the backing member.

4.1 roll change device including: a rotatablesupport for a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member with the web from the employed roll intervening whereby the webs from the employed and replenishing rolls may be attached together, means for turning the support in the same general direction as that of the feeding movement of the employed web adjacent the backing member, and means to move the replenishing web against the employed web and the latter against the backing member.

5. A roll change device including: a rotatable support for a plurality of rotatable web rolls,'one an employed and another a replenishing roll, a backing member adj acent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member with the web from the employed roll intervening whereby the webs from the employed and replenishing rolls may be attached together, a pasting roller mounted adjacent the backing member but with the webs intervening, and a crank arm to cause the pasting roller to move the replenishing web against the employed web and the latter against the backing member with a wiping movement in the same general direction as that of the feeding movement of the employed web adjacent the backing member.

6. A roll change device including: a retatable supportfor a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies adjacent said backing member with the web from the employed roll intervening whereby the webs from the employed and replenishing rolls may be attached together, means for turning the support in the same general direction as that of the feeding movement of the employed web adjacent the backing memher, a pasting roller mounted adjacent the backing member but with the webs intervening, and a crank arm to cause the pasting roller to move the replenishing web against the employed web and the latter against the backing member with a wiping movement in the same general direction as that of the feeding movement of the employed web adjacent the backing member.

7. A roll change device including: a rotatable support for a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the employed roll passes, means for so threading the web from the replenishing roll that a portion thereof lies from the replenishing roll that a portion from the employed roll intervenin including a pastingro ler and a pasting s elf, and a crank for withdrawing the replenishing web from the shelf and bringing it against the employed web in the plane of the backing member.

8. A roll change device including: a rdtatable support for a plurality of rotatable web rolls, one an employed and another a replenishing roll, a backing member adjacent which the web from the'employed roll passes, means for so threading the web thereof lies adjacent said backing member with the web from the employed roll intervening including a pasting roller and a pasting shelf, a crank for withdrawingthe replenishing web fromthe shelf-and bringing it against the employed 'web in the plane of the backing member, and means for turningthe sup ort in the same'general membe direction as that o the feeding movement of the employed'web adjacent the backing 9. Web-attaching means including: a

backing member adjacent which the web from an employed roll passes, a pasting roller, adjacent the backing member but with the employed web intervening, over which passes,adjacent theemployed web, a replenishing web, a pasting shelf to receive the leading end of the replenishing web, and a crank arm to cause the pasting roller to move the replenishing web against the employed web in the plane of the backing member with a wiping movement in the same general direction as that of the feeding movement of the employed web adjacent the backing member.

are gui mg websfrom both rolls in the same 10. A roll change device including: a rov general direction and'adjacent to each other so that they may be attached together whether the support is standing still or moving, and means for turning the sup ort in the same general direction as that o the feeding movement of the webs unwinding from the rolls. 4

11. A roll change device including: a rotatable support for a plurality of rotatable web rolls to be successively employed, and means for unwinding the webs from the rolls with a feeding movement having the samegeneral direction as that of the rotatable support.

12. ,Web attaching means including: a backing member adjacent which the web from an employed web roll passes and extending longitudinally of said web, a pasting roller, adjacent the backing member but with the employed web intervening, over which passes, adgacent the employed web, a replenishing we a pasting shelf to receive the leading end of the replenishing web, and means to cause the pasting roller to' move along said backing member in the'same general-direction as that of the feeding movement of the employed web, and to move the replenishing web against the employed web in the plane of the backing member.

Signed at Plainfield, in the county of Union and State of New Jersey, this 16th day of March, 1926.

DAVID J. SCOTT. 

